PRESSED POWDER CORE, AND METHOD FOR MANUFACTURING THE SAME

Title:

PRESSED POWDER CORE, AND METHOD FOR MANUFACTURING THE SAME

Document Type and Number:

Japanese Patent JP2011199049

Kind Code:

A

Abstract:

To provide a pressed powder core capable of satisfying all of increased permeability, reduced core loss, and increased density, and to provide a method for manufacturing the pressed powder core.

The pressed powder core contains a soft magnetic material including a metal magnetic particle and an insulating film surrounding the surface of the metal magnetic particle. In a range of from 528.0-534.0 eV in a spectrum acquired in measuring a broken-out section of the pressed powder core by an X-ray electron spectroscopy analysis method, the pressed powder core has a single binding energy peak in a range of from 531.0-532.0 eV. The pressed powder core has a surface state where the insulating film covering the metal magnetic particle is not destroyed and oxidized.

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Inventors:

SHINKAI YOSHIHIRO
TOKORO SEIGO

Application Number:

JP2010064843A

Publication Date:

October 06, 2011

Filing Date:

March 19, 2010

Export Citation:

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Assignee:

TDK CORP

International Classes:

H01F1/24; B22F1/00; B22F1/02; B22F3/00; B22F3/02; B22F3/24; C22C38/00; H01F27/255; H01F41/02

Domestic Patent References:

JP2004143554A	2004-05-20
JP2009070885A	2009-04-02
JP2009295991A	2009-12-17
JP2008140929A	2008-06-19

Attorney, Agent or Firm:

Yoshiyuki Inaba
Toshifumi Onuki
Takuji Fukasawa

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